Mostly what I'm looking for with a beta addon is the ability to get map coordinates for logging bugs - currently have to give verbal descriptions of where you see a glitch, and that's imprecise for passing on to the devs.

I'm still surprised that map co-ords are not a default piece of information on the in game map (player location and cursor location like you get form Mapster).

Use the in-game Bug Report feature for location specific issues, it automatically attaches your location out in the world to your report.